Combination tumbler door-lock



UNITED sTATEs PATENT oEEIoEl ROBERT M. TUTTLE, OF NEI/VARK, NEW JERSEY.

COMBINATION TUMBLER DOOR-LOCK.

Specication of Letters Patent No. 2,869, dated December 5, 1842.

To all whom/ may concern Be it known that I, ROBERT M. TUTTLE, ofNewark, in the county of Essex and State of New Jersey, have invented anew and useful Improvement in Locks, of which the following is aspecification. See t-he drawings thereof.

P, is the protector, a lever working on an axis and having at each end aquad or hold intended for securing the bolt in its place.

A, is the bolt with notches for the reception of the guard on theprotector.

B, C D E F and G, are tumblers on the external one of which C, there isa spring designed to depress it with a greater certainty than can bedone by its own weight.

H, Nos. 2, 4, and 6 are wheels.

I, shows the lock with the bolt protruded as when the door is locked.

J is the lock showing the position Vof the key as it turns and elevatesthe tumblers.

a, is a pin on the tumblers.

Z), is a slot, in the wheels in which the pin a works.

c, is a notch on edge of the wheels.

d, is an arm or guard on the end of the protector which rests on theperiphery of the wheels and which falls into notches cut into them whenthey are made to coincide by the action of the tumblers on the wheels.

e, is a bolt guard on the protector..

f, f, are notches in the bolt, into which the bolt guard falls.

g, is a stump fast to the bolt and passes through the slot, lz., in thetumblers when the bolt moves.

z, is the slot in the tumblers.

The key to this lock is formed of bits of unequal lengths.

When the lock is in its natural state with the bolt drawn in orsheathed, the guard (Z on the right end of the nrotector is sustained bythe edge of the wheels on which it rests, while the guard, e, on theother end being depressed, falls int-o the notches f No. 1 in the boltand secures the bolt, by inserting the key and elevating the tumblers inits revolution the wheels H, Nos. 2, 4 and 6 are set in motion by meansof the pin, a, on the tumblers working in the slots, b, in the wheels.These slots should on the alternate wheels be placed to the right and tothe left of the center thereof respectively with the pin to correspond,whereby a motion inv the one wheel will be caused to the right, and inthe other to the left. of the wheels will bring the notches, c, on theperiphery of each together so as to form a regular groove across theedge of the wheels and as this groove passes under the This motionguard, cl, on the protector the guard falls Y by its own weight into itand thereby elevates the other end of the protector at f, and liberatesthe bolt which then on the further turning of the key passes out as thewheels again move on the falling of the tumblers a beveled notch on theexternal wheel throws up the guard, d, on the protecting lever, and atthe same time depresses the guard, e, at thel other end of the lever,

which then falls into the notch f No. 2 in the bolt, and this holds itfinely in its place. This completes the revolution of the key and showsthe operation of the lock.

That I claim in this lock is- The combination of the protector orprotecting lever with t-he wheels to produce a security unattained as Ithink by other locks now in use that is to say I claim to have infVvented that combinedaction of the wheels ,upon the protector which by anice adjust- ROBT. M. TUT'ILE.

Witnesses:

DpA. HALL, A. E. HALL.

